<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>商品管理</el-breadcrumb-item>
        <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片区域 -->
    <el-card>
        <!-- 搜索框和添加商品按钮 -->
        <el-row :gutter="20">
            <el-col :span="8">
                <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable>
                    <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
                </el-input>
            </el-col>
            <el-col :span="4">
                <el-button type="primary" @click="goAddPage">添加商品</el-button>
            </el-col>
        </el-row>

        <!-- 商品列表区域 -->
        <el-table :data="goodsList" border stripe>
            <!-- 索引列 -->
            <el-table-column type="index"></el-table-column>
            <el-table-column label="商品名称" prop="goods_name"></el-table-column>
            <el-table-column label="商品价格（元）" prop="goods_price" width="100px"></el-table-column>
            <el-table-column label="商品重量" prop="goods_weight" width="80px"></el-table-column>
            <el-table-column label="创建时间" prop="add_time" width="170px">
                <template slot-scope="scope">
                    <!-- 调用过滤器 dateFormat-->
                    {{ scope.row.add_time | dateFormat}}
                </template>
            </el-table-column>
            <el-table-column label="操作" width="140px">
                <template slot-scope="scope">
                    <el-button type="primary" icon="el-icon-edit" size="mini"></el-button>
                    <el-button type="danger" icon="el-icon-delete" size="mini"
                    @click="removeById(scope.row.goods_id)"></el-button>
                </template>
            </el-table-column>
        </el-table>

        <!-- 分页区域 -->
        <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange"
            :current-page="queryInfo.pagenum" :page-sizes="[10, 20, 30, 50]" :page-size="queryInfo.pagesize"
            layout="total, sizes, prev, pager, next, jumper" :total="total" background>
        </el-pagination>
    </el-card>
  </div>
</template>

<script>
export default {
    data(){
        return {
            // 查询参数对象
            queryInfo:{
                query:'', //要查询的内容
                pagenum:1,  //当前页码值 默认第一页
                pagesize:10,  //一页有几条数据 默认10条
            },
            goodsList:[],
            total:0,

        }
    },
    created(){
        this.getGoodsList();
    },
    methods:{
        // 根据分页获取对应的商品列表
        async getGoodsList(){
            const {data:res} = await this.$http.get(`goods`,{params: this.queryInfo})
            if(res.meta.status !==200)
            {
                return this.$message.error('获取商品列表失败！')
            }
            console.log(res.data);
            // this.$message.success('获取商品列表成功！')
            this.goodsList = res.data.goods;
            this.total = res.data.total;
        },
        // 当每一页显示的数据条数变化时 触发
        handleSizeChange(newSize){
            this.queryInfo.pagesize = newSize;
            this.getGoodsList();
        },
        // 当前页码变化时触发 
        handleCurrentChange(newPage){
            this.queryInfo.pagenum =newPage;
            this.getGoodsList();
        },
        // 删除商品
        async removeById(id){
            const confirmResult = await this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).catch(err => err)

            if(confirmResult !== 'confirm')
            {
                return this.$message.info('已取消删除！')
            }
            // 确认删除 发起请求
            const {data:res} = await this.$http.delete(`goods/${id}`)
            if(res.meta.status !==200)
            {
                return this.$message.error('删除商品失败！')
            }
            this.$message.success('删除商品成功！')
            this.getGoodsList();
        },
        // 跳转到添加商品的页面
        goAddPage(){
            this.$router.push('/goods/add')
        },
    },
    computed:{

    },
}
</script>

<style scoped>

</style>